D-And F-Block Elements Ques 404

Question: The lanthanide contraction relates to

[Kerala PMT 2004]

Options:

A) Atomic radii

B) Atomic as well as $ {{M}^{3+}} $ radii

C) Valence electrons

D) Oxidation states

E) Ionisation energy

Show Answer

Answer:

Correct Answer: B

Solution:

The lanthanide contraction relates to atomic as well as $ {{M}^{3+}} $ radii in which the regular decrease in the size of lanthanoid ion from $ L{{a}^{3+}} $ to $ L{{u}^{3+}} $ are found.



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